/Engine/Source/Runtime/MovieScene/Public/MovieSceneFolder.h
Searches for a track in this folder and its child folders, if found returns the folder containing the track.
[UMovieSceneFolder](API\Runtime\MovieScene\UMovieSceneFolder) * FindFolderContaining ( const [UMovieSceneTrack](API\Runtime\MovieScene\UMovieSceneTrack) * InTrack )